초록

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Abstract ▼ AI-Helper

The present investigations were carried out for the purpose of making clear the fundamental features of the compositional difference of agarose and agaropectin in agar prepared from Gellidium amansii collected in different places and seasons, and its effect on properties of agar. The samples, Gellid...

The present investigations were carried out for the purpose of making clear the fundamental features of the compositional difference of agarose and agaropectin in agar prepared from Gellidium amansii collected in different places and seasons, and its effect on properties of agar. The samples, Gellidium amansii, was collected every month from the same locality on the coast of the Ilgwang-myon, Yangsan-gun, Kyongnam, from March 1982 to February 1983. In addition, agarose and agaropectin in agar were isolated by dimethyl sulfoxide. The results obtained were summarized as follows : 1. In seasonal variation, the maximum yield of agar noted from spring through summer, and the minimum in February. 2. The experiment showed that the agarose and agaropectin composition in agar was changed, even if the seaweed collected from the same season was used as raw material. Seasonal variation of agarose and agaropectin contents in agar, the highest content occurred in August, $76.2\%$, and the lowest in January, $50.1%$. 3. Jelly strength, gelation ability of agar tended to increase as the agarose content was risen, but sulfate content was decreased.